<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Hello World</title>
    <img src="1.png">
</head>
<body>
<h1>Hello World</h1>
<img src="1.png">

<script>
    let add=(a, b)=> {
        return a + b;
    }

    let result = add(10, 20);
    alert(result)
</script>

</body>
</html>